OpenFactor
Open source 2FA, no account
Free
OpenFactor generates two-factor authentication codes on iPhone and Apple Watch. No account, no server, no analytics, no third-party code.
Your accounts are encrypted before they are stored. The key that opens them lives in the app's private container on each device, is never synced, is never written to the Keychain, and is excluded from device backups. If you turn on iCloud sync, the encrypted records travel through your own iCloud Keychain and the key does not go with them.
DESIGN PRINCIPLES
· No backend to breach, subpoena, or shut down.
· No telemetry.
· Built in the open from the first commit.
· Your accounts are yours to take elsewhere.
WHAT IT DOES
· Generates TOTP and HOTP codes to the published standards, verified against the test vectors in those specifications.
· Shows one code at a time on Apple Watch, which keeps working with your iPhone off, absent, or out of range.
· Imports from other authenticators, including Google Authenticator transfer codes and Aegis vaults. Scan a setup code with the Camera app, open one from an image, or share an image straight into OpenFactor without saving it to Photos first.
· Exports an encrypted backup whose format is public and documented, or a plain file for moving to another app. The difference is stated on screen, because portability should not require hiding the security cost.
· Locks behind Face ID, Touch ID, or your passcode.
WHAT IT DELIBERATELY DOES NOT DO
· No Mac app and no browser extension. A second factor is worth less the moment it lives on the machine asking for it.
· No password storage and no autofill. This is an authenticator, not a password manager.
OPEN SOURCE
· The source is public, including the design documents, review findings, and hardware experiments behind them. Read it at github.com/dragut-eth/openfactor
Ratings & Reviews
After "Try again", or after canceling a transfer preview, the camera now picks up the next code right away.
With App Lock on, canceling Face ID right after opening OpenFactor now shows the lock screen and its Unlock button instead of a blank screen.
If adding an account fails, OpenFactor now says so.
When adding an account by hand, you can now set the refresh period from 1 second to 1 hour, the same range a scanned code can carry.
Starting a search now ends reordering, so accounts can no longer move to the wrong place.
Your Apple Watch now asks your iPhone again after the vault on your iPhone is replaced.
Your Apple Watch no longer briefly shows an error while your wrist is down.
App Lock no longer gets stuck after your iPhone's passcode is removed and set again.
The import preview now does less work while it is open.
The vault screens no longer carry an old message onto a later screen.
The developer, ReVeNG System, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- ReVeNG System
- Size
- 6.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 ReVeNG System